Blades are 8x harder than untreated stainless steel. Stays sharper longer.Plastic components contain an antimicrobial agent to help inhibit the growth of bacterial stains and odours. Comfort grip blade carriage with spring assist allows cutting pressure to accommodate different paper thickness. V-Groove knife edge guarantees a straight cut every time and acts as a cut line indicator. Easy-to-read measuring grid. Swing-out ruler extends the measuring deck to 14.5 in. Cuts up to 10 sheets of 20lb paper. Ideal for heavy duty cutting such as thick card stock, plastic, photographs and more. 12 in. Green and white.